You wish to determine if there is a negative linear correlation between the two variables at a significance level of α=0.10. You have the following bivariate data set. x y 48.9 69 35.9 71.3 19.7 79.1...


You wish to determine if there is a negative linear correlation between the two variables at a significance level of  α=0.10. You have the following bivariate data set.





































































































































xy
48.969
35.971.3
19.779.1
48.464.1
40.2108.2
39.173.8
47.380.3
54.275.7
59.873.7
37.262.1
30.667.4
57.749.6
43.792
21.1119.9
25.364.7
29.984.5
38.237.4
43.162.5
33.5101.4
34.883.8
31.976.5
61.252.6
49.484.4
47.359.6
53.158.6
21.889.9
37.256.8
29.594.2
55.670.9
40.656.8





What is the correlation coefficient for this data set?

r =


To find the p-value for a correlation coefficient, you need to convert to at-score:t=√r2(n−2)1−r2 This
t-score is from at-distribution withn–2 degrees of freedom.


What is the p-value for this correlation coefficient?
p-value =


Your final conclusion is that...




  • There is insufficient sample evidence to support the claim the there is a negative correlation between the two variables.

  • There is sufficient sample evidence to support the claim that there is a statistically significant negative correlation between the two variables.







Note: In your calculations, round both r and t to 3 decimal places in ALL calculations.



Jun 03, 2022
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